<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8" />
		<title>计时器(timeout)</title>
	</head>
	<body>
		10秒后跳转...<span id="t">10</span>
		<script type="text/javascript">
		var s=10;
		var timer=setInterval(function(){
			s--;
			document.getElementById("t").innerText=s;
			if(s==0){
				clearinterval(timer);
				location.href="http://baidu.com";
			}
		},1000);
		</script>
		

		
	</body>
</html>